* Extract vcpkg_extract_archive from vcpkg_find_acquire_program.
* Extract vcpkg_download_sourceforge from vcpkg_from_sourceforge.
This allows vcpkg_find_acquire_program to download from SourceForge without needing to temporarily change _VCPKG_EDITABLE.
* Use whether a URI is known for an entity to decide whether to downloads it rather than checking a separate supported_on_unix boolean.
* Add unparsed arguments check to vcpkg_extract_archive
* [docs] Delete embedded documentation in favor of docs/
Drive-by for the helper ports:
1. "documentation": "https://vcpkg.io/en/docs/README.html"
2. "license": "MIT"
3. Use `include_guard(GLOBAL)` in all script files
4. Make sure any persistent variables are saved to the cache
* [docs] Restore empty regenerate.ps1 to satisfy Azure Pipelines
* [docs] PR comments
* [vcpkg docs] Change how documenting port functions works
Instead of using `##`, use comment blocks for documentation.
Also, add some minor docs and change RST -> MD
so we actually get docs generated.
* add CI stuff
* regenerate docs
* fix vcpkg_find_acquire_program to not use _execute_process
* [vcpkg] Track hashes of cmake script helpers in consuming portfiles
* [vcpkg] Format
* [vcpkg_find_acquire_program] Use cpkg_from_sourceforge for FLEX and BISON
Co-authored-by: Robert Schumacher <roschuma@microsoft.com>
